PENELLOPE IV. A comparison between optical forbidden lines and \rm H_2 UV lines in the Orion OB1b and σ-Ori associations

Observing the spatial distribution and excitation processes of atomic and molecular gas in the inner regions (< 20 au) of young (< 10 Myr) protoplanetary disks helps us to understand the conditions for the formation and evolution of planetary systems. In the framework of the PENELLOPE and ULLYSES projects, we... Show more